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michael_gaganis

Michael G

@michael_gaganis

Senior Backend Developer, Spring Boot and AWS AI

Greece
English, Greek
About me
Senior Backend Developer with 2+ years building production systems in Java Spring Boot. I design REST APIs, lead feature delivery and integrate third-party systems, deployed with Docker, Kubernetes and Jenkins CI/CD. I also build AI solutions on AWS: I helped launch an insurance company's AI Lab, shipping RAG chatbots with Bedrock, Lambda, API Gateway and Pinecone. I write clean, tested code, communicate clearly, and focus on what your business actually needs. Message me before ordering and let's scope your project.... Read more

Skills

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michael_gaganis
Michael G
Offline • 

See my services

API & Integrations
I will build a scalable java spring boot backend and rest API
From$40 / projectMore details
AI Integrations
I will build a rag ai chatbot on AWS bedrock for your documents
From$100 / projectMore details

Work experience

Cognity

Senior Back End Developer

Cognity • Full-time

Sep 2025 - Present • 1 yr 1 mo

Promoted from Back End Developer to Senior Back End Developer in October 2026. - Run daily stand-ups and coordinate the engineering team - Price new features and lead their delivery from scoping to release - Drive technical design decisions for the API and third-party integrations - Review code and mentor engineers to keep quality consistent - Developed and maintained the product's API with Java Spring Boot - Built and maintained integrations with third-party systems - Deployed services on Kubernetes through Jenkins CI/CD pipelines - Supported the product in production, investigating issues with Elasticsearch and Kibana

Netcompany

Full-Stack Developer Consultant

Netcompany • Full-time

Sep 2024 - Sep 2025 • 1 yr

- Delivered end-to-end solutions tailored to client needs using Java Spring Boot, Oracle SQL and TypeScript - Created user stories, performed requirement analysis and wrote technical documentation to support development - Worked closely with the team to make sure every delivered product was high-quality and impactful

Hellas_Direct

Full-Stack Developer, AI Lab

Hellas Direct • Part-time

Jul 2024 - Aug 2025 • 1 yr 1 mo

- Hired as part of a select team to launch the company's AI Lab, exploring and implementing AI solutions across departments - Identified department needs and determined how AI tools could support them - Deployed solutions on AWS (Lambda, EC2, API Gateway, Bedrock, ELB) with Pinecone, DynamoDB and MariaDB, complementing the existing infrastructure and boosting productivity